A power transformer is a static electrical equipment, which is used to convert a certain value of AC voltage (current) into another voltage (current) with the same frequency or several different values. It is a power plant and substation. One of the main equipment of the institute.
The main raw materials of transformer products include oriented silicon steel sheet, transformer oil and accessories, copper wire, steel plate, insulating cardboard. Among them, oriented silicon steel sheet accounts for about 35% of the production cost; transformer oil and accessories account for about 27% of the production cost; copper wire accounts for about 19% of the production cost; steel plate accounts for about 5% of the production cost; insulating cardboard accounts for about the production cost 3%.
1. Industry development background
The performance and quality of power transformers are directly related to the reliability and operational benefits of power system operation. According to data from the National Bureau of Statistics, since 2014, my country’s annual loss has basically remained at a level of more than 300 billion kilowatt-hours. Among them, the transformer loss accounts for about 40% of the power loss in transmission and distribution, which has great energy saving potential.
2. Industry status
Judging from the output trend, in the past five years, the total output of my country’s transformers has shown a fluctuating trend. From 2017 to 2018, the production scale declined for two consecutive years, and it rebounded in 2019. The overall scale reached 1,756,000,000 kA, a year-on-year increase of 20.6%. In 2020, the output scale decreased slightly to 1,736,012,000 kA.From the perspective of on-grid operation, by the end of 2020, the number of power transformers operating on the grid in my country was 170 million, with a total capacity of 11 billion kVA.
Future development trend of power transformer industry
1. Global
With the global awareness of energy conservation and emission reduction, the accelerated deployment of smart grids and super grids, and favorable government policies will continue to promote the development of the power transformer industry. The market demand for power transformers in the Asia-Pacific region maintains strong growth, and the market demand in the Asia-Pacific region accounts for an increasing proportion of the world. In addition to this, increasing electricity usage, replacement of existing power transformers, and increasing adoption of smart grids and smart transformers drive the global power transformers market.
2. China
In order to adapt to and meet the market demand, many power transformer manufacturers have introduced advanced production technology and equipment from abroad in order to continuously improve the product structure and improve product performance, and strengthen the exploration of new processes and new materials. Its development presents a trend of large capacity and high voltage. ; Environmental protection, miniaturization, portability and high impedance development, it is expected that my country’s power transformer development prospects are good.
Post time: Aug-12-2022